package service;


/**
 * A book is a product with an ISBN number.
 */
public class Book extends Product {
    private static final long serialVersionUID = -574208648242387645L;

    public Book(String title, String isbn, double price) {
	super(title, price);
	this.isbn = isbn;
    }

    public String getDescription() {
	return super.getDescription() + " " + isbn;
    }

    private String isbn;
}
